Privacy Policy for QD-System.com

1. Introduction

This Privacy Policy explains how QD-System ("we," "us," "our") collects, uses, discloses, and protects your information when you use our engineering calculation website.

2. Information We Collect

We collect two types of information from our users:

Personal Information You Provide

This includes:

• **Contact Data:** Name, email, and company information.
• **Calculation Data:** The **engineering parameters, inputs, and data** you enter to perform calculations.

Automatically Collected Information

This data is collected as you interact with our Service:

• **Usage Data:** IP address, browser type, operating system.
• **Activity Data:** Pages visited, timestamps, and referring URLs.

3. How We Use Your Information

We use your information for the following purposes:

• **Service Operation:** To provide, operate, and maintain the Service.
• **Core Functionality:** To **process your calculations** and generate results.
• **Development & Improvement:** To improve, test, and develop the accuracy of our calculation algorithms and services.
• **Communication:** To communicate with you about service updates, security alerts, or support issues.
• **Legal Compliance:** To comply with legal obligations.

4. How We Share Your Information

We do not sell your personal information.

We may share it only under the following limited circumstances:

• **Service Providers:** With trusted **third-party Service Providers** (e.g., cloud hosting, payment processors) strictly necessary to operate the Service.
• **Legal Requirement:** If required by law or necessary to protect our rights and property.
• **Consent:** With your explicit consent.

5. Data Security

We implement **commercially reasonable technical and organizational measures** to protect your data, including encryption of data in transit and at rest, and strict access controls.

6. Data Retention

We retain your personal information only as long as necessary to fulfill the purposes outlined in this policy, unless a longer retention period is required by law. Calculation data associated with your account will be retained according to your account settings or until you request deletion.

7. Your Privacy Rights

Depending on your location (e.g., under GDPR or CCPA), you may have rights to access, correct, delete, or restrict the processing of your personal data.

To exercise these rights, contact us at: sinanyz@gmail.com

8. Use of Cookies

We use cookies and similar tracking technologies to analyze trends, administer the website, and track users' movements around the site. You have the ability to **control cookie settings through your browser.**

9. Changes to This Policy

We may update this policy periodically. We will notify you of any **material changes** by posting the new policy on this page and updating the "Last Updated" date. We encourage you to review this policy regularly.

10. Contact Us

If you have questions about this Privacy Policy, please contact us at:

sinanyz@gmail.com